1 m and 18 m, this wavelength being advantageously chosen as that which
is known in diathermy as suitable for the tissues to be penetrated or for
the surrounding tissues.

3. An assemblage making it possible to obtain a combination of a stream
of electrically charged particles and a beam of centimeter electromagnetic
waves in order to penetrate intimately and to irradiate living tissues
and particularly human tissues, the said assemblage comprising at least
a particle emitter, means for channeling said particles in a cavity serving
as waveguide for an emitter of electromagnetic radiation of which the wavelength
is included in the range of centimeter waves and preferably adjustable
from 3 cm to 80 cm, means for generating in the cavity magnetic field for
acceleration and concentration and means for concentrating and accelerating
the resulting radiation at the exit of the cavity.

4. Modes of implementation with the following details taken separately
or in the various possible combinations:

a. The particle emitter is an electron gun of which the anode is at
the end of the cavity and the cathode is situated further along, this cathode
being hollow and placed in the magnetic field of an electromagnetic in
order to ensure emission of a stream of particles towards the mouth of
the cavity;

b. The cathode consists of a rim connected by two aligned spokes to
a hub, the said rim being provided internally with an annular housing containing
a heated filament and the said housing communicating with a number of holes
arranged annularly and traversing the rim transversely;

c. The cathode is made of a metal of valency close to the mean valency
of the chemical molecules comprising the tissue to be penetrated;

d. The cathode is of tungsten or preferably of molybdenum;

e. The cavity contains a rare gas, preferably argon, under a vacuum
of the order of 2 mm Hg;

f. The cavity contains a duct carrying at least part of the stream of
particles to a cyclotron and a duct bringing back into the cavity the particles
accelerated in the cyclotron;

g. The cavity passes through several coils, the supply current for the
various coils being capable of undergoing modulation at different frequencies;

h. The downstream end of the cavity is composed of a tube containing,
in the part from which the resulting radiation must emerge, a cathode and
an electromagnet which may be identical to the cathode and the electromagnetic
according to para. a, an anode near the other end, and a rotary deflector
consisting of a number of plates arranged en